Building of an online catalogue of the Research Library of the Polish Composers’ Union is co-financed by the Minister of Education and Science as part of the “Social Responsibility of Science - Support for scientific libraries” programme in 2022-2024. Project's title: „Udostępnienie w Internecie katalogu muzykaliów biblioteki naukowej Związku Kompozytorów Polskich” (Making available online the catalogue of music collections of the Research Library of the Polish Composers’ Union).